Modify Ammo on impact

[FS-21]

• Warheads can now modify ammo of the affected objects.

In rulesmd.ini:

[SOMEWARHEAD]   ; Warhead
Ammo=0  ; integer

[github-actions]

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[Starkku]

Looks okay except for couple of small things.

[NetsuNegi]

Ammo may be a concise and clear tag

[FS-21]

Ammo may be a concise and clear tag

What do you mean, reuse the tag name for the warhead tag? I don't remember if Ammo was used by someone else before in WH

[mevitar]

So does this mean that TransferTypes, and other attempts to make warheads modify ammo, were truly abandoned?
Not because i'm agaisnt this, just want to make sure that someone won't revive those older attempts and redo what this does.

[Metadorius]

TransferTypes have been lost in dev limbo even though they're much better than random one-off non-systematic modifiers.

[FS-21]

Applied feedback and renamed the tag from AmmoModifier to Ammo.